Drugs like cocaine and even marijuana and nicotine affect the brainâs natural function. The drug overwhelms the brain with a chemical called dopamine. Dopamine makes the brain and body feel pleasure. When the drug wears off, the dopamine drains out of the userâs system. This makes a person feel that the only way they can feel pleasure is by taking drugs.
March 31, 2015. Apple uses its own signature operating system, which since 2001 has been derived from Unix and known as OS X. Before OS X came OS 9, otherwise known as Classic.. As of June 2014, the latest version of OS X is called Mavericks..
Itâs why thereâs nothing else like a Mac. macOS is the operating system that powers every Mac. It lets you do things you simply canât with other computers. Thatâs because itâs designed specifically for the hardware it runs on â and vice versa. So your Mac works like magic with your iPhone and other Apple devices.